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Z3---4.15.1.UNS-Prf.s

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%------------------------------------------------------------------------------
% File     : Z3---4.15.1
% Problem  : SWC182-1 : TPTP v9.0.0. Released v2.4.0.
% Transfm  : none
% Format   : tptp
% Command  : run_E %s %d THM

% Computer : n008.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Sat Jun 21 05:30:26 AM UTC 2025

% Result   : Unsatisfiable 0.19s 0.43s
% Output   : Proof 0.19s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   14
%            Number of leaves      :   50
% Syntax   : Number of formulae    :  116 (  35 unt;   0 typ;   0 def)
%            Number of atoms       :  803 ( 131 equ)
%            Maximal formula atoms :   20 (   6 avg)
%            Number of connectives : 1261 ( 621   ~; 566   |;   0   &)
%                                         (  74 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   12 (   6 avg)
%            Maximal term depth    :    4 (   1 avg)
%            Number of FOOLs       :   47 (  47 fml;   0 var)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of predicates  :    9 (   7 usr;   1 prp; 0-3 aty)
%            Number of functors    :    8 (   8 usr;   6 con; 0-2 aty)
%            Number of variables   :  247 ( 223   !;   0   ?; 247   :)

% Comments : 
%------------------------------------------------------------------------------
tff(memberP_type,type,
    memberP: ( $i * $i ) > $o ).

tff(sk5_type,type,
    sk5: $i ).

tff(app_type,type,
    app: ( $i * $i ) > $i ).

tff(cons_type,type,
    cons: ( $i * $i ) > $i ).

tff(nil_type,type,
    nil: $i ).

tff(sk6_type,type,
    sk6: $i ).

tff(sk7_type,type,
    sk7: $i ).

tff(sk3_type,type,
    sk3: $i ).

tff(sk1_type,type,
    sk1: $i ).

tff(ssList_type,type,
    ssList: $i > $o ).

tff(ssItem_type,type,
    ssItem: $i > $o ).

tff(1,plain,
    ( ( nil = sk3 )
  <=> ( nil = sk3 ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(2,axiom,
    nil = sk3,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_5) ).

tff(3,plain,
    nil = sk3,
    inference(modus_ponens,[status(thm)],[2,1]) ).

tff(4,plain,
    sk3 = nil,
    inference(symmetry,[status(thm)],[3]) ).

tff(5,plain,
    ( ( sk1 = sk3 )
  <=> ( sk1 = sk3 ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(6,axiom,
    sk1 = sk3,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_7) ).

tff(7,plain,
    sk1 = sk3,
    inference(modus_ponens,[status(thm)],[6,5]) ).

tff(8,plain,
    ( ( app(app(sk6,cons(sk5,nil)),sk7) = sk1 )
  <=> ( app(app(sk6,cons(sk5,nil)),sk7) = sk1 ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(9,axiom,
    app(app(sk6,cons(sk5,nil)),sk7) = sk1,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_11) ).

tff(10,plain,
    app(app(sk6,cons(sk5,nil)),sk7) = sk1,
    inference(modus_ponens,[status(thm)],[9,8]) ).

tff(11,plain,
    app(app(sk6,cons(sk5,nil)),sk7) = nil,
    inference(transitivity,[status(thm)],[10,7,4]) ).

tff(12,plain,
    ( ssItem(sk5)
  <=> ssItem(sk5) ),
    inference(rewrite,[status(thm)],[]) ).

tff(13,axiom,
    ssItem(sk5),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_8) ).

tff(14,plain,
    ssItem(sk5),
    inference(modus_ponens,[status(thm)],[13,12]) ).

tff(15,plain,
    ^ [V: $i,U: $i] :
      refl(( ( ~ ssItem(U)
          | ~ ssList(V)
          | ssList(cons(U,V)) )
      <=> ( ~ ssItem(U)
          | ~ ssList(V)
          | ssList(cons(U,V)) ) )),
    inference(bind,[status(th)],[]) ).

tff(16,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ssList(cons(U,V)) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ssList(cons(U,V)) ) ),
    inference(quant_intro,[status(thm)],[15]) ).

tff(17,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ssList(cons(U,V)) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ssList(cons(U,V)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(18,plain,
    ^ [V: $i,U: $i] :
      rewrite(( ( ~ ssItem(U)
          | ~ ssList(V)
          | ssList(cons(U,V)) )
      <=> ( ~ ssItem(U)
          | ~ ssList(V)
          | ssList(cons(U,V)) ) )),
    inference(bind,[status(th)],[]) ).

tff(19,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ssList(cons(U,V)) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ssList(cons(U,V)) ) ),
    inference(quant_intro,[status(thm)],[18]) ).

tff(20,axiom,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ssList(cons(U,V)) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause86) ).

tff(21,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ssList(cons(U,V)) ),
    inference(modus_ponens,[status(thm)],[20,19]) ).

tff(22,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ssList(cons(U,V)) ),
    inference(modus_ponens,[status(thm)],[21,17]) ).

tff(23,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ssList(cons(U,V)) ),
    inference(skolemize,[status(sab)],[22]) ).

tff(24,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ssList(cons(U,V)) ),
    inference(modus_ponens,[status(thm)],[23,16]) ).

tff(25,plain,
    ( ssList(nil)
  <=> ssList(nil) ),
    inference(rewrite,[status(thm)],[]) ).

tff(26,axiom,
    ssList(nil),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause8) ).

tff(27,plain,
    ssList(nil),
    inference(modus_ponens,[status(thm)],[26,25]) ).

tff(28,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssList(V)
            | ssList(cons(U,V)) )
      | ~ ssItem(sk5)
      | ~ ssList(nil)
      | ssList(cons(sk5,nil)) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssList(V)
            | ssList(cons(U,V)) )
      | ~ ssItem(sk5)
      | ~ ssList(nil)
      | ssList(cons(sk5,nil)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(29,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssItem(U)
          | ~ ssList(V)
          | ssList(cons(U,V)) )
    | ~ ssItem(sk5)
    | ~ ssList(nil)
    | ssList(cons(sk5,nil)) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(30,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssItem(U)
          | ~ ssList(V)
          | ssList(cons(U,V)) )
    | ~ ssItem(sk5)
    | ~ ssList(nil)
    | ssList(cons(sk5,nil)) ),
    inference(modus_ponens,[status(thm)],[29,28]) ).

tff(31,plain,
    ssList(cons(sk5,nil)),
    inference(unit_resolution,[status(thm)],[30,27,24,14]) ).

tff(32,plain,
    ( ssList(sk6)
  <=> ssList(sk6) ),
    inference(rewrite,[status(thm)],[]) ).

tff(33,axiom,
    ssList(sk6),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_9) ).

tff(34,plain,
    ssList(sk6),
    inference(modus_ponens,[status(thm)],[33,32]) ).

tff(35,plain,
    ^ [V: $i,U: $i] :
      refl(( ( ~ ssList(U)
          | ssList(app(V,U))
          | ~ ssList(V) )
      <=> ( ~ ssList(U)
          | ssList(app(V,U))
          | ~ ssList(V) ) )),
    inference(bind,[status(th)],[]) ).

tff(36,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ssList(app(V,U))
        | ~ ssList(V) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ssList(app(V,U))
        | ~ ssList(V) ) ),
    inference(quant_intro,[status(thm)],[35]) ).

tff(37,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ssList(app(V,U))
        | ~ ssList(V) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ssList(app(V,U))
        | ~ ssList(V) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(38,plain,
    ^ [V: $i,U: $i] :
      rewrite(( ( ~ ssList(U)
          | ~ ssList(V)
          | ssList(app(V,U)) )
      <=> ( ~ ssList(U)
          | ssList(app(V,U))
          | ~ ssList(V) ) )),
    inference(bind,[status(th)],[]) ).

tff(39,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ssList(app(V,U)) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ssList(app(V,U))
        | ~ ssList(V) ) ),
    inference(quant_intro,[status(thm)],[38]) ).

tff(40,axiom,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ssList(app(V,U)) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause85) ).

tff(41,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ssList(app(V,U))
      | ~ ssList(V) ),
    inference(modus_ponens,[status(thm)],[40,39]) ).

tff(42,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ssList(app(V,U))
      | ~ ssList(V) ),
    inference(modus_ponens,[status(thm)],[41,37]) ).

tff(43,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ssList(app(V,U))
      | ~ ssList(V) ),
    inference(skolemize,[status(sab)],[42]) ).

tff(44,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ssList(app(V,U))
      | ~ ssList(V) ),
    inference(modus_ponens,[status(thm)],[43,36]) ).

tff(45,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ssList(app(V,U))
            | ~ ssList(V) )
      | ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(cons(sk5,nil))
      | ~ ssList(sk6) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ssList(app(V,U))
            | ~ ssList(V) )
      | ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(cons(sk5,nil))
      | ~ ssList(sk6) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(46,plain,
    ( ( ~ ssList(cons(sk5,nil))
      | ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(sk6) )
  <=> ( ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(cons(sk5,nil))
      | ~ ssList(sk6) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(47,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ssList(app(V,U))
            | ~ ssList(V) )
      | ~ ssList(cons(sk5,nil))
      | ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(sk6) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ssList(app(V,U))
            | ~ ssList(V) )
      | ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(cons(sk5,nil))
      | ~ ssList(sk6) ) ),
    inference(monotonicity,[status(thm)],[46]) ).

tff(48,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ssList(app(V,U))
            | ~ ssList(V) )
      | ~ ssList(cons(sk5,nil))
      | ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(sk6) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ssList(app(V,U))
            | ~ ssList(V) )
      | ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(cons(sk5,nil))
      | ~ ssList(sk6) ) ),
    inference(transitivity,[status(thm)],[47,45]) ).

tff(49,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssList(U)
          | ssList(app(V,U))
          | ~ ssList(V) )
    | ~ ssList(cons(sk5,nil))
    | ssList(app(sk6,cons(sk5,nil)))
    | ~ ssList(sk6) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(50,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssList(U)
          | ssList(app(V,U))
          | ~ ssList(V) )
    | ssList(app(sk6,cons(sk5,nil)))
    | ~ ssList(cons(sk5,nil))
    | ~ ssList(sk6) ),
    inference(modus_ponens,[status(thm)],[49,48]) ).

tff(51,plain,
    ssList(app(sk6,cons(sk5,nil))),
    inference(unit_resolution,[status(thm)],[50,44,34,31]) ).

tff(52,plain,
    ( ssList(sk7)
  <=> ssList(sk7) ),
    inference(rewrite,[status(thm)],[]) ).

tff(53,axiom,
    ssList(sk7),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_10) ).

tff(54,plain,
    ssList(sk7),
    inference(modus_ponens,[status(thm)],[53,52]) ).

tff(55,plain,
    ^ [V: $i,U: $i] :
      refl(( ( ~ ssList(U)
          | ( nil = U )
          | ~ ssList(V)
          | ( app(U,V) != nil ) )
      <=> ( ~ ssList(U)
          | ( nil = U )
          | ~ ssList(V)
          | ( app(U,V) != nil ) ) )),
    inference(bind,[status(th)],[]) ).

tff(56,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ~ ssList(V)
        | ( app(U,V) != nil ) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ~ ssList(V)
        | ( app(U,V) != nil ) ) ),
    inference(quant_intro,[status(thm)],[55]) ).

tff(57,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ~ ssList(V)
        | ( app(U,V) != nil ) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ~ ssList(V)
        | ( app(U,V) != nil ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(58,plain,
    ^ [V: $i,U: $i] :
      trans(monotonicity(trans(monotonicity(rewrite(( ( ( app(U,V) != nil )
                  | ~ ssList(V) )
              <=> ( ~ ssList(V)
                  | ( app(U,V) != nil ) ) )),
              ( ( ( app(U,V) != nil )
                | ~ ssList(V)
                | ~ ssList(U) )
            <=> ( ~ ssList(V)
                | ( app(U,V) != nil )
                | ~ ssList(U) ) )),
            rewrite(( ( ~ ssList(V)
                | ( app(U,V) != nil )
                | ~ ssList(U) )
            <=> ( ~ ssList(U)
                | ~ ssList(V)
                | ( app(U,V) != nil ) ) )),
            ( ( ( app(U,V) != nil )
              | ~ ssList(V)
              | ~ ssList(U) )
          <=> ( ~ ssList(U)
              | ~ ssList(V)
              | ( app(U,V) != nil ) ) )),
          ( ( ( app(U,V) != nil )
            | ~ ssList(V)
            | ~ ssList(U)
            | ( nil = U ) )
        <=> ( ~ ssList(U)
            | ~ ssList(V)
            | ( app(U,V) != nil )
            | ( nil = U ) ) )),
        rewrite(( ( ~ ssList(U)
            | ~ ssList(V)
            | ( app(U,V) != nil )
            | ( nil = U ) )
        <=> ( ~ ssList(U)
            | ( nil = U )
            | ~ ssList(V)
            | ( app(U,V) != nil ) ) )),
        ( ( ( app(U,V) != nil )
          | ~ ssList(V)
          | ~ ssList(U)
          | ( nil = U ) )
      <=> ( ~ ssList(U)
          | ( nil = U )
          | ~ ssList(V)
          | ( app(U,V) != nil ) ) )),
    inference(bind,[status(th)],[]) ).

tff(59,plain,
    ( ! [V: $i,U: $i] :
        ( ( app(U,V) != nil )
        | ~ ssList(V)
        | ~ ssList(U)
        | ( nil = U ) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ~ ssList(V)
        | ( app(U,V) != nil ) ) ),
    inference(quant_intro,[status(thm)],[58]) ).

tff(60,axiom,
    ! [V: $i,U: $i] :
      ( ( app(U,V) != nil )
      | ~ ssList(V)
      | ~ ssList(U)
      | ( nil = U ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause118) ).

tff(61,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ~ ssList(V)
      | ( app(U,V) != nil ) ),
    inference(modus_ponens,[status(thm)],[60,59]) ).

tff(62,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ~ ssList(V)
      | ( app(U,V) != nil ) ),
    inference(modus_ponens,[status(thm)],[61,57]) ).

tff(63,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ~ ssList(V)
      | ( app(U,V) != nil ) ),
    inference(skolemize,[status(sab)],[62]) ).

tff(64,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ~ ssList(V)
      | ( app(U,V) != nil ) ),
    inference(modus_ponens,[status(thm)],[63,56]) ).

tff(65,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ~ ssList(V)
            | ( app(U,V) != nil ) )
      | ~ ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(sk7)
      | ( nil = app(sk6,cons(sk5,nil)) )
      | ( app(app(sk6,cons(sk5,nil)),sk7) != nil ) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ~ ssList(V)
            | ( app(U,V) != nil ) )
      | ~ ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(sk7)
      | ( nil = app(sk6,cons(sk5,nil)) )
      | ( app(app(sk6,cons(sk5,nil)),sk7) != nil ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(66,plain,
    ( ( ~ ssList(app(sk6,cons(sk5,nil)))
      | ( nil = app(sk6,cons(sk5,nil)) )
      | ~ ssList(sk7)
      | ( app(app(sk6,cons(sk5,nil)),sk7) != nil ) )
  <=> ( ~ ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(sk7)
      | ( nil = app(sk6,cons(sk5,nil)) )
      | ( app(app(sk6,cons(sk5,nil)),sk7) != nil ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(67,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ~ ssList(V)
            | ( app(U,V) != nil ) )
      | ~ ssList(app(sk6,cons(sk5,nil)))
      | ( nil = app(sk6,cons(sk5,nil)) )
      | ~ ssList(sk7)
      | ( app(app(sk6,cons(sk5,nil)),sk7) != nil ) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ~ ssList(V)
            | ( app(U,V) != nil ) )
      | ~ ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(sk7)
      | ( nil = app(sk6,cons(sk5,nil)) )
      | ( app(app(sk6,cons(sk5,nil)),sk7) != nil ) ) ),
    inference(monotonicity,[status(thm)],[66]) ).

tff(68,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ~ ssList(V)
            | ( app(U,V) != nil ) )
      | ~ ssList(app(sk6,cons(sk5,nil)))
      | ( nil = app(sk6,cons(sk5,nil)) )
      | ~ ssList(sk7)
      | ( app(app(sk6,cons(sk5,nil)),sk7) != nil ) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ~ ssList(V)
            | ( app(U,V) != nil ) )
      | ~ ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(sk7)
      | ( nil = app(sk6,cons(sk5,nil)) )
      | ( app(app(sk6,cons(sk5,nil)),sk7) != nil ) ) ),
    inference(transitivity,[status(thm)],[67,65]) ).

tff(69,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssList(U)
          | ( nil = U )
          | ~ ssList(V)
          | ( app(U,V) != nil ) )
    | ~ ssList(app(sk6,cons(sk5,nil)))
    | ( nil = app(sk6,cons(sk5,nil)) )
    | ~ ssList(sk7)
    | ( app(app(sk6,cons(sk5,nil)),sk7) != nil ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(70,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssList(U)
          | ( nil = U )
          | ~ ssList(V)
          | ( app(U,V) != nil ) )
    | ~ ssList(app(sk6,cons(sk5,nil)))
    | ~ ssList(sk7)
    | ( nil = app(sk6,cons(sk5,nil)) )
    | ( app(app(sk6,cons(sk5,nil)),sk7) != nil ) ),
    inference(modus_ponens,[status(thm)],[69,68]) ).

tff(71,plain,
    nil = app(sk6,cons(sk5,nil)),
    inference(unit_resolution,[status(thm)],[70,64,54,51,11]) ).

tff(72,plain,
    app(sk6,cons(sk5,nil)) = nil,
    inference(symmetry,[status(thm)],[71]) ).

tff(73,plain,
    ( memberP(app(sk6,cons(sk5,nil)),sk5)
  <=> memberP(nil,sk5) ),
    inference(monotonicity,[status(thm)],[72]) ).

tff(74,plain,
    ( memberP(nil,sk5)
  <=> memberP(app(sk6,cons(sk5,nil)),sk5) ),
    inference(symmetry,[status(thm)],[73]) ).

tff(75,plain,
    ( ~ memberP(nil,sk5)
  <=> ~ memberP(app(sk6,cons(sk5,nil)),sk5) ),
    inference(monotonicity,[status(thm)],[74]) ).

tff(76,plain,
    ^ [U: $i] :
      refl(( ( ~ ssItem(U)
          | ~ memberP(nil,U) )
      <=> ( ~ ssItem(U)
          | ~ memberP(nil,U) ) )),
    inference(bind,[status(th)],[]) ).

tff(77,plain,
    ( ! [U: $i] :
        ( ~ ssItem(U)
        | ~ memberP(nil,U) )
  <=> ! [U: $i] :
        ( ~ ssItem(U)
        | ~ memberP(nil,U) ) ),
    inference(quant_intro,[status(thm)],[76]) ).

tff(78,plain,
    ( ! [U: $i] :
        ( ~ ssItem(U)
        | ~ memberP(nil,U) )
  <=> ! [U: $i] :
        ( ~ ssItem(U)
        | ~ memberP(nil,U) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(79,plain,
    ^ [U: $i] :
      rewrite(( ( ~ memberP(nil,U)
          | ~ ssItem(U) )
      <=> ( ~ ssItem(U)
          | ~ memberP(nil,U) ) )),
    inference(bind,[status(th)],[]) ).

tff(80,plain,
    ( ! [U: $i] :
        ( ~ memberP(nil,U)
        | ~ ssItem(U) )
  <=> ! [U: $i] :
        ( ~ ssItem(U)
        | ~ memberP(nil,U) ) ),
    inference(quant_intro,[status(thm)],[79]) ).

tff(81,axiom,
    ! [U: $i] :
      ( ~ memberP(nil,U)
      | ~ ssItem(U) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause71) ).

tff(82,plain,
    ! [U: $i] :
      ( ~ ssItem(U)
      | ~ memberP(nil,U) ),
    inference(modus_ponens,[status(thm)],[81,80]) ).

tff(83,plain,
    ! [U: $i] :
      ( ~ ssItem(U)
      | ~ memberP(nil,U) ),
    inference(modus_ponens,[status(thm)],[82,78]) ).

tff(84,plain,
    ! [U: $i] :
      ( ~ ssItem(U)
      | ~ memberP(nil,U) ),
    inference(skolemize,[status(sab)],[83]) ).

tff(85,plain,
    ! [U: $i] :
      ( ~ ssItem(U)
      | ~ memberP(nil,U) ),
    inference(modus_ponens,[status(thm)],[84,77]) ).

tff(86,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssItem(U)
            | ~ memberP(nil,U) )
      | ~ ssItem(sk5)
      | ~ memberP(nil,sk5) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssItem(U)
            | ~ memberP(nil,U) )
      | ~ ssItem(sk5)
      | ~ memberP(nil,sk5) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(87,plain,
    ( ~ ! [U: $i] :
          ( ~ ssItem(U)
          | ~ memberP(nil,U) )
    | ~ ssItem(sk5)
    | ~ memberP(nil,sk5) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(88,plain,
    ( ~ ! [U: $i] :
          ( ~ ssItem(U)
          | ~ memberP(nil,U) )
    | ~ ssItem(sk5)
    | ~ memberP(nil,sk5) ),
    inference(modus_ponens,[status(thm)],[87,86]) ).

tff(89,plain,
    ~ memberP(nil,sk5),
    inference(unit_resolution,[status(thm)],[88,85,14]) ).

tff(90,plain,
    ~ memberP(app(sk6,cons(sk5,nil)),sk5),
    inference(modus_ponens,[status(thm)],[89,75]) ).

tff(91,plain,
    ^ [W: $i,V: $i,U: $i] :
      refl(( ( ~ ssList(U)
          | ~ ssItem(V)
          | ~ ssList(W)
          | ~ ssList(app(U,cons(V,W)))
          | memberP(app(U,cons(V,W)),V) )
      <=> ( ~ ssList(U)
          | ~ ssItem(V)
          | ~ ssList(W)
          | ~ ssList(app(U,cons(V,W)))
          | memberP(app(U,cons(V,W)),V) ) )),
    inference(bind,[status(th)],[]) ).

tff(92,plain,
    ( ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssItem(V)
        | ~ ssList(W)
        | ~ ssList(app(U,cons(V,W)))
        | memberP(app(U,cons(V,W)),V) )
  <=> ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssItem(V)
        | ~ ssList(W)
        | ~ ssList(app(U,cons(V,W)))
        | memberP(app(U,cons(V,W)),V) ) ),
    inference(quant_intro,[status(thm)],[91]) ).

tff(93,plain,
    ( ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssItem(V)
        | ~ ssList(W)
        | ~ ssList(app(U,cons(V,W)))
        | memberP(app(U,cons(V,W)),V) )
  <=> ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssItem(V)
        | ~ ssList(W)
        | ~ ssList(app(U,cons(V,W)))
        | memberP(app(U,cons(V,W)),V) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(94,plain,
    ^ [W: $i,V: $i,U: $i] :
      rewrite(( ( ~ ssList(app(U,cons(V,W)))
          | ~ ssList(U)
          | ~ ssItem(V)
          | memberP(app(U,cons(V,W)),V)
          | ~ ssList(W) )
      <=> ( ~ ssList(U)
          | ~ ssItem(V)
          | ~ ssList(W)
          | ~ ssList(app(U,cons(V,W)))
          | memberP(app(U,cons(V,W)),V) ) )),
    inference(bind,[status(th)],[]) ).

tff(95,plain,
    ( ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(app(U,cons(V,W)))
        | ~ ssList(U)
        | ~ ssItem(V)
        | memberP(app(U,cons(V,W)),V)
        | ~ ssList(W) )
  <=> ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssItem(V)
        | ~ ssList(W)
        | ~ ssList(app(U,cons(V,W)))
        | memberP(app(U,cons(V,W)),V) ) ),
    inference(quant_intro,[status(thm)],[94]) ).

tff(96,plain,
    ( ! [W: $i,V: $i,U: $i,X: $i] :
        ( ~ ssList(app(U,cons(V,W)))
        | ~ ssList(U)
        | ~ ssItem(V)
        | memberP(app(U,cons(V,W)),V)
        | ~ ssList(W) )
  <=> ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(app(U,cons(V,W)))
        | ~ ssList(U)
        | ~ ssItem(V)
        | memberP(app(U,cons(V,W)),V)
        | ~ ssList(W) ) ),
    inference(elim_unused_vars,[status(thm)],[]) ).

tff(97,plain,
    ( ! [W: $i,V: $i,U: $i,X: $i] :
        ( ~ ssList(X)
        | ~ ssList(U)
        | ~ ssItem(V)
        | memberP(X,V)
        | ~ ssList(W)
        | ( app(U,cons(V,W)) != X ) )
  <=> ! [W: $i,V: $i,U: $i,X: $i] :
        ( ~ ssList(app(U,cons(V,W)))
        | ~ ssList(U)
        | ~ ssItem(V)
        | memberP(app(U,cons(V,W)),V)
        | ~ ssList(W) ) ),
    inference(destructive_equality_resolution,[status(thm)],[]) ).

tff(98,plain,
    ( ! [W: $i,V: $i,U: $i,X: $i] :
        ( ~ ssList(X)
        | ~ ssList(U)
        | ~ ssItem(V)
        | memberP(X,V)
        | ~ ssList(W)
        | ( app(U,cons(V,W)) != X ) )
  <=> ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(app(U,cons(V,W)))
        | ~ ssList(U)
        | ~ ssItem(V)
        | memberP(app(U,cons(V,W)),V)
        | ~ ssList(W) ) ),
    inference(transitivity,[status(thm)],[97,96]) ).

tff(99,plain,
    ( ! [W: $i,V: $i,U: $i,X: $i] :
        ( ~ ssList(X)
        | ~ ssList(U)
        | ~ ssItem(V)
        | memberP(X,V)
        | ~ ssList(W)
        | ( app(U,cons(V,W)) != X ) )
  <=> ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssItem(V)
        | ~ ssList(W)
        | ~ ssList(app(U,cons(V,W)))
        | memberP(app(U,cons(V,W)),V) ) ),
    inference(transitivity,[status(thm)],[98,95]) ).

tff(100,plain,
    ^ [W: $i,V: $i,U: $i,X: $i] :
      trans(monotonicity(trans(monotonicity(trans(monotonicity(trans(monotonicity(rewrite(( ( ( app(U,cons(V,W)) != X )
                          | ~ ssList(W) )
                      <=> ( ~ ssList(W)
                          | ( app(U,cons(V,W)) != X ) ) )),
                      ( ( ( app(U,cons(V,W)) != X )
                        | ~ ssList(W)
                        | ~ ssList(U) )
                    <=> ( ~ ssList(W)
                        | ( app(U,cons(V,W)) != X )
                        | ~ ssList(U) ) )),
                    rewrite(( ( ~ ssList(W)
                        | ( app(U,cons(V,W)) != X )
                        | ~ ssList(U) )
                    <=> ( ~ ssList(U)
                        | ~ ssList(W)
                        | ( app(U,cons(V,W)) != X ) ) )),
                    ( ( ( app(U,cons(V,W)) != X )
                      | ~ ssList(W)
                      | ~ ssList(U) )
                  <=> ( ~ ssList(U)
                      | ~ ssList(W)
                      | ( app(U,cons(V,W)) != X ) ) )),
                  ( ( ( app(U,cons(V,W)) != X )
                    | ~ ssList(W)
                    | ~ ssList(U)
                    | ~ ssItem(V) )
                <=> ( ~ ssList(U)
                    | ~ ssList(W)
                    | ( app(U,cons(V,W)) != X )
                    | ~ ssItem(V) ) )),
                rewrite(( ( ~ ssList(U)
                    | ~ ssList(W)
                    | ( app(U,cons(V,W)) != X )
                    | ~ ssItem(V) )
                <=> ( ~ ssList(U)
                    | ~ ssItem(V)
                    | ~ ssList(W)
                    | ( app(U,cons(V,W)) != X ) ) )),
                ( ( ( app(U,cons(V,W)) != X )
                  | ~ ssList(W)
                  | ~ ssList(U)
                  | ~ ssItem(V) )
              <=> ( ~ ssList(U)
                  | ~ ssItem(V)
                  | ~ ssList(W)
                  | ( app(U,cons(V,W)) != X ) ) )),
              ( ( ( app(U,cons(V,W)) != X )
                | ~ ssList(W)
                | ~ ssList(U)
                | ~ ssItem(V)
                | ~ ssList(X) )
            <=> ( ~ ssList(U)
                | ~ ssItem(V)
                | ~ ssList(W)
                | ( app(U,cons(V,W)) != X )
                | ~ ssList(X) ) )),
            rewrite(( ( ~ ssList(U)
                | ~ ssItem(V)
                | ~ ssList(W)
                | ( app(U,cons(V,W)) != X )
                | ~ ssList(X) )
            <=> ( ~ ssList(X)
                | ~ ssList(U)
                | ~ ssItem(V)
                | ~ ssList(W)
                | ( app(U,cons(V,W)) != X ) ) )),
            ( ( ( app(U,cons(V,W)) != X )
              | ~ ssList(W)
              | ~ ssList(U)
              | ~ ssItem(V)
              | ~ ssList(X) )
          <=> ( ~ ssList(X)
              | ~ ssList(U)
              | ~ ssItem(V)
              | ~ ssList(W)
              | ( app(U,cons(V,W)) != X ) ) )),
          ( ( ( app(U,cons(V,W)) != X )
            | ~ ssList(W)
            | ~ ssList(U)
            | ~ ssItem(V)
            | ~ ssList(X)
            | memberP(X,V) )
        <=> ( ~ ssList(X)
            | ~ ssList(U)
            | ~ ssItem(V)
            | ~ ssList(W)
            | ( app(U,cons(V,W)) != X )
            | memberP(X,V) ) )),
        rewrite(( ( ~ ssList(X)
            | ~ ssList(U)
            | ~ ssItem(V)
            | ~ ssList(W)
            | ( app(U,cons(V,W)) != X )
            | memberP(X,V) )
        <=> ( ~ ssList(X)
            | ~ ssList(U)
            | ~ ssItem(V)
            | memberP(X,V)
            | ~ ssList(W)
            | ( app(U,cons(V,W)) != X ) ) )),
        ( ( ( app(U,cons(V,W)) != X )
          | ~ ssList(W)
          | ~ ssList(U)
          | ~ ssItem(V)
          | ~ ssList(X)
          | memberP(X,V) )
      <=> ( ~ ssList(X)
          | ~ ssList(U)
          | ~ ssItem(V)
          | memberP(X,V)
          | ~ ssList(W)
          | ( app(U,cons(V,W)) != X ) ) )),
    inference(bind,[status(th)],[]) ).

tff(101,plain,
    ( ! [W: $i,V: $i,U: $i,X: $i] :
        ( ( app(U,cons(V,W)) != X )
        | ~ ssList(W)
        | ~ ssList(U)
        | ~ ssItem(V)
        | ~ ssList(X)
        | memberP(X,V) )
  <=> ! [W: $i,V: $i,U: $i,X: $i] :
        ( ~ ssList(X)
        | ~ ssList(U)
        | ~ ssItem(V)
        | memberP(X,V)
        | ~ ssList(W)
        | ( app(U,cons(V,W)) != X ) ) ),
    inference(quant_intro,[status(thm)],[100]) ).

tff(102,plain,
    ( ! [W: $i,V: $i,U: $i,X: $i] :
        ( ( app(U,cons(V,W)) != X )
        | ~ ssList(W)
        | ~ ssList(U)
        | ~ ssItem(V)
        | ~ ssList(X)
        | memberP(X,V) )
  <=> ! [W: $i,V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssItem(V)
        | ~ ssList(W)
        | ~ ssList(app(U,cons(V,W)))
        | memberP(app(U,cons(V,W)),V) ) ),
    inference(transitivity,[status(thm)],[101,99]) ).

tff(103,axiom,
    ! [W: $i,V: $i,U: $i,X: $i] :
      ( ( app(U,cons(V,W)) != X )
      | ~ ssList(W)
      | ~ ssList(U)
      | ~ ssItem(V)
      | ~ ssList(X)
      | memberP(X,V) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause175) ).

tff(104,plain,
    ! [W: $i,V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssItem(V)
      | ~ ssList(W)
      | ~ ssList(app(U,cons(V,W)))
      | memberP(app(U,cons(V,W)),V) ),
    inference(modus_ponens,[status(thm)],[103,102]) ).

tff(105,plain,
    ! [W: $i,V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssItem(V)
      | ~ ssList(W)
      | ~ ssList(app(U,cons(V,W)))
      | memberP(app(U,cons(V,W)),V) ),
    inference(modus_ponens,[status(thm)],[104,93]) ).

tff(106,plain,
    ! [W: $i,V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssItem(V)
      | ~ ssList(W)
      | ~ ssList(app(U,cons(V,W)))
      | memberP(app(U,cons(V,W)),V) ),
    inference(skolemize,[status(sab)],[105]) ).

tff(107,plain,
    ! [W: $i,V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssItem(V)
      | ~ ssList(W)
      | ~ ssList(app(U,cons(V,W)))
      | memberP(app(U,cons(V,W)),V) ),
    inference(modus_ponens,[status(thm)],[106,92]) ).

tff(108,plain,
    ( ( ~ ! [W: $i,V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssItem(V)
            | ~ ssList(W)
            | ~ ssList(app(U,cons(V,W)))
            | memberP(app(U,cons(V,W)),V) )
      | ~ ssList(nil)
      | ~ ssItem(sk5)
      | ~ ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(sk6)
      | memberP(app(sk6,cons(sk5,nil)),sk5) )
  <=> ( ~ ! [W: $i,V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssItem(V)
            | ~ ssList(W)
            | ~ ssList(app(U,cons(V,W)))
            | memberP(app(U,cons(V,W)),V) )
      | ~ ssList(nil)
      | ~ ssItem(sk5)
      | ~ ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(sk6)
      | memberP(app(sk6,cons(sk5,nil)),sk5) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(109,plain,
    ( ( ~ ssList(sk6)
      | ~ ssItem(sk5)
      | ~ ssList(nil)
      | ~ ssList(app(sk6,cons(sk5,nil)))
      | memberP(app(sk6,cons(sk5,nil)),sk5) )
  <=> ( ~ ssList(nil)
      | ~ ssItem(sk5)
      | ~ ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(sk6)
      | memberP(app(sk6,cons(sk5,nil)),sk5) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(110,plain,
    ( ( ~ ! [W: $i,V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssItem(V)
            | ~ ssList(W)
            | ~ ssList(app(U,cons(V,W)))
            | memberP(app(U,cons(V,W)),V) )
      | ~ ssList(sk6)
      | ~ ssItem(sk5)
      | ~ ssList(nil)
      | ~ ssList(app(sk6,cons(sk5,nil)))
      | memberP(app(sk6,cons(sk5,nil)),sk5) )
  <=> ( ~ ! [W: $i,V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssItem(V)
            | ~ ssList(W)
            | ~ ssList(app(U,cons(V,W)))
            | memberP(app(U,cons(V,W)),V) )
      | ~ ssList(nil)
      | ~ ssItem(sk5)
      | ~ ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(sk6)
      | memberP(app(sk6,cons(sk5,nil)),sk5) ) ),
    inference(monotonicity,[status(thm)],[109]) ).

tff(111,plain,
    ( ( ~ ! [W: $i,V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssItem(V)
            | ~ ssList(W)
            | ~ ssList(app(U,cons(V,W)))
            | memberP(app(U,cons(V,W)),V) )
      | ~ ssList(sk6)
      | ~ ssItem(sk5)
      | ~ ssList(nil)
      | ~ ssList(app(sk6,cons(sk5,nil)))
      | memberP(app(sk6,cons(sk5,nil)),sk5) )
  <=> ( ~ ! [W: $i,V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssItem(V)
            | ~ ssList(W)
            | ~ ssList(app(U,cons(V,W)))
            | memberP(app(U,cons(V,W)),V) )
      | ~ ssList(nil)
      | ~ ssItem(sk5)
      | ~ ssList(app(sk6,cons(sk5,nil)))
      | ~ ssList(sk6)
      | memberP(app(sk6,cons(sk5,nil)),sk5) ) ),
    inference(transitivity,[status(thm)],[110,108]) ).

tff(112,plain,
    ( ~ ! [W: $i,V: $i,U: $i] :
          ( ~ ssList(U)
          | ~ ssItem(V)
          | ~ ssList(W)
          | ~ ssList(app(U,cons(V,W)))
          | memberP(app(U,cons(V,W)),V) )
    | ~ ssList(sk6)
    | ~ ssItem(sk5)
    | ~ ssList(nil)
    | ~ ssList(app(sk6,cons(sk5,nil)))
    | memberP(app(sk6,cons(sk5,nil)),sk5) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(113,plain,
    ( ~ ! [W: $i,V: $i,U: $i] :
          ( ~ ssList(U)
          | ~ ssItem(V)
          | ~ ssList(W)
          | ~ ssList(app(U,cons(V,W)))
          | memberP(app(U,cons(V,W)),V) )
    | ~ ssList(nil)
    | ~ ssItem(sk5)
    | ~ ssList(app(sk6,cons(sk5,nil)))
    | ~ ssList(sk6)
    | memberP(app(sk6,cons(sk5,nil)),sk5) ),
    inference(modus_ponens,[status(thm)],[112,111]) ).

tff(114,plain,
    ( ~ ssList(app(sk6,cons(sk5,nil)))
    | memberP(app(sk6,cons(sk5,nil)),sk5) ),
    inference(unit_resolution,[status(thm)],[113,27,107,14,34]) ).

tff(115,plain,
    memberP(app(sk6,cons(sk5,nil)),sk5),
    inference(unit_resolution,[status(thm)],[114,51]) ).

tff(116,plain,
    $false,
    inference(unit_resolution,[status(thm)],[115,90]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem    : SWC182-1 : TPTP v9.0.0. Released v2.4.0.
% 0.07/0.12  % Command    : run_E %s %d THM
% 0.11/0.33  % Computer : n008.cluster.edu
% 0.11/0.33  % Model    : x86_64 x86_64
% 0.11/0.33  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.33  % Memory   : 8042.1875MB
% 0.11/0.33  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.11/0.33  % CPULimit   : 300
% 0.11/0.33  % WCLimit    : 300
% 0.11/0.33  % DateTime   : Fri Jun 20 08:32:33 EDT 2025
% 0.11/0.33  % CPUTime    : 
% 0.19/0.43  % SZS status Unsatisfiable
% 0.19/0.43  % SZS output start Proof
% See solution above
% 0.19/0.45  % E exiting
%------------------------------------------------------------------------------